Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3a45476ccf09e05c2f32e48ea844b1b8a54e2022a85f105cd00a82d05a6465b6' 
  AND token = 'tTadtC6vCbH2m4Ud33igyP+MzH5qhz6c3QnEQL/J4fE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}